So as the thread shows, I didn't say you were wrong, simply wanted to know where you got the information, ... apparently your long term hunting in sask, as you put it, didn't enable you to provide the info, so i did find it myself.
You are absolutely right, for muzzleloader, archery and shotgun you may wear camo, but if there is an open rifle season, you must wear blaze.
Better trusting the official regs, rather than second hand info on a reg that is admittedly poorly stated in the guide.
Hunting clothing
21(1) Every person hunting big game and every person accompanying or guiding
him shall wear:
(a) above the waist, an outer suit of clothing coloured scarlet, bright yellow,
blaze orange, white or any combination of those colours; and
(b) a cap or toque coloured scarlet, bright yellow, blaze orange or any
combination of those colours.
(2) Notwithstanding subsection (1), a person hunting big game for which there is
an open archery, muzzle-loading firearm or shotgun season established pursuant
to The Open Seasons Game Regulations may wear camouflage or other clothing.
(3) Notwithstanding subsection (2), a person hunting mule deer pursuant to an
archery mule deer licence is subject to clause 21(1)(a) during any period that the
archery mule deer season runs concurrent with the special mule deer rifle season.